Alert archive / Wyoming / Red Flag Warnings in 2020

Red Flag Warning 21, NWS Cheyenne, WY

August 9, 2020

NWS Cheyenne, WY issued this red flag warning at Aug 9, 2020, 2:32 PM MDT. It took effect at Aug 10, 2020, 9:00 AM MDT. It was in force for 11 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Aug 9, 2020, 2:32 PM MDT (20:32 UTC)
In effect from
Aug 10, 2020, 9:00 AM MDT
Expired
Aug 10, 2020, 8:00 PM MDT
In force
11 hr
Issued by
NWS Cheyenne, WY

The text

As transmitted.

254 
WWUS85 KCYS 092032
RFWCYS

URGENT - FIRE WEATHER MESSAGE
National Weather Service Cheyenne WY
232 PM MDT Sun Aug 9 2020

...CRITICAL FIRE WEATHER CONDITIONS THIS AFTERNOON AND MONDAY 
ALONG AND WEST OF THE LARAMIE RANGE...

WYZ303>308-101100-
/O.UPG.KCYS.FW.A.0016.200810T1600Z-200811T0200Z/
/O.NEW.KCYS.FW.W.0021.200810T1500Z-200811T0200Z/
/O.CON.KCYS.FW.W.0020.000000T0000Z-200810T0200Z/
Central and Northern Carbon/Ferris-Seminoe-Shirley Mountains-
Southwest Carbon County-Sierra Madre Range/Medicine Bow NF-
Upper North Platte River Basin-Snowy Range/Medicine Bow NF-
Laramie Valley/Shirley Basin-
232 PM MDT Sun Aug 9 2020

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING
FOR LOW HUMIDITY AND GUSTY WINDS FOR FIRE WEATHER ZONES 303, 304,
305, 306, 307, AND 308... 
...RED FLAG WARNING IN EFFECT FROM 9 AM
TO 8 PM MDT MONDAY FOR LOW HUMIDITY AND GUSTY WINDS FOR FIRE 
WEATHER ZONES 303, 304, 305, 306, 307, AND 308...

The National Weather Service in Cheyenne has issued a Red Flag
Warning, which is in effect from 9 AM to 8 PM MDT Monday. The
Fire Weather Watch is no longer in effect. 

* AFFECTED AREA...Fire weather zones 303 through 308.

* WIND...West to southwest 15 to 20 mph sustained with gusts to 
  30 mph. Similar winds expected Monday.

* HUMIDITY...8 to 12 percent this afternoon with similar 
  humidity expected Monday. 

* HAINES...6.

* IMPACTS...Any fires that develop will likely spread rapidly. 
  Outdoor burning is not recommended.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Red Flag Warning means that critical fire weather conditions
are either occurring now...or will shortly. A combination of
gusty winds...low relative humidity...and warm temperatures can
contribute to extreme fire behavior.

&&


$$

WYZ310-100200-
/O.EXA.KCYS.FW.W.0020.000000T0000Z-200810T0200Z/
Platte/Goshen/Central and Eastern Laramie-
232 PM MDT Sun Aug 9 2020

...RED FLAG WARNING IN EFFECT UNTIL 8 PM MDT THIS EVENING FOR LOW
HUMIDITY AND GUSTY WINDS FOR FIRE WEATHER ZONE 310...

The National Weather Service in Cheyenne has issued a Red Flag
Warning, which is in effect until 8 PM MDT this evening. 

* AFFECTED AREA...Fire weather zone 310.

* WIND...West to southwest 15 to 20 mph sustained with gusts to 
  30 mph.

* HUMIDITY...8 to 12 percent this afternoon.

* HAINES...6.

* IMPACTS...Any fires that develop will likely spread rapidly. 
  Outdoor burning is not recommended.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Red Flag Warning means that critical fire weather conditions
are either occurring now...or will shortly. A combination of
gusty winds...low relative humidity...and warm temperatures can
contribute to extreme fire behavior.

&&

$$

WYZ302-309-100200-
/O.CON.KCYS.FW.W.0020.000000T0000Z-200810T0200Z/
North Laramie Range/Medicine Bow NF-
South Laramie Range/Medicine Bow NF-
232 PM MDT Sun Aug 9 2020

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING
FOR LOW HUMIDITY AND GUSTY WINDS FOR FIRE WEATHER ZONES 302 AND 
309...

* AFFECTED AREA...Fire weather zones 302 and 309.

* WIND...West to southwest 15 to 20 mph sustained with gusts to 
  30 mph.

* HUMIDITY...8 to 12 percent this afternoon.

* HAINES...6.

* IMPACTS...Any fires that develop will likely spread rapidly. 
  Outdoor burning is not recommended.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Red Flag Warning means that critical fire weather conditions
are either occurring now...or will shortly. A combination of
gusty winds...low relative humidity...and warm temperatures can
contribute to extreme fire behavior.

&&

$$
4 follow-up statements
525 
WWUS85 KCYS 100145
RFWCYS

URGENT - FIRE WEATHER MESSAGE
National Weather Service Cheyenne WY
745 PM MDT Sun Aug 9 2020

...CRITICAL FIRE WEATHER CONDITIONS MONDAY WEST OF THE LARAMIE RANGE...

WYZ303>308-101100-
/O.EXP.KCYS.FW.W.0020.000000T0000Z-200810T0200Z/
/O.CON.KCYS.FW.W.0021.200810T1500Z-200811T0200Z/
Central and Northern Carbon/Ferris-Seminoe-Shirley Mountains-
Southwest Carbon County-Sierra Madre Range/Medicine Bow NF-
Upper North Platte River Basin-Snowy Range/Medicine Bow NF-
Laramie Valley/Shirley Basin-
745 PM MDT Sun Aug 9 2020

...RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING FOR 
LOW HUMIDITY AND GUSTY WINDS FOR FIRE WEATHER ZONES 303, 304, 
305, 306, 307, AND 308...
...RED FLAG WARNING REMAINS IN EFFECT FROM 9 AM TO 8 PM MDT
MONDAY FOR LOW HUMIDITY AND GUSTY WINDS FOR FIRE WEATHER ZONES 
303, 304, 305, 306, 307, AND 308...

* AFFECTED AREA...Fire weather zones 303 through 308.

* WIND...West to southwest 15 to 20 mph sustained with gusts to 30
  mph Monday.

* HUMIDITY...8 to 12 percent Monday afternoon.

* HAINES...6.

* IMPACTS...Any fires that develop will likely spread rapidly. 
  Outdoor burning is not recommended.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Red Flag Warning means that critical fire weather conditions
are either occurring now...or will shortly. A combination of
gusty winds...low relative humidity...and warm temperatures can
contribute to extreme fire behavior.

&&

$$

WYZ302-309-310-100245-
/O.EXP.KCYS.FW.W.0020.000000T0000Z-200810T0200Z/
North Laramie Range/Medicine Bow NF-
South Laramie Range/Medicine Bow NF-
Platte/Goshen/Central and Eastern Laramie-
745 PM MDT Sun Aug 9 2020

...RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING FOR LOW 
HUMIDITY AND GUSTY WINDS FOR FIRE WEATHER ZONES 302, 309, AND 
310...

West to northwest winds 10 to 15 mph with gusts to 20 mph will 
shift to the east and northeast with the passage of a front this 
evening. Humidities will increase above 15 percent as well.

$$
459 
WWUS85 KCYS 100817
RFWCYS

URGENT - FIRE WEATHER MESSAGE
National Weather Service Cheyenne WY
217 AM MDT Mon Aug 10 2020

...CRITICAL FIRE WEATHER CONDITIONS CONTINUE TODAY INTO TUESDAY
WEST OF THE LARAMIE RANGE...

WYZ303>308-110000-
/O.NEW.KCYS.FW.A.0017.200811T1700Z-200812T0200Z/
/O.CON.KCYS.FW.W.0021.200810T1500Z-200811T0200Z/
Central and Northern Carbon/Ferris-Seminoe-Shirley Mountains-
Southwest Carbon County-Sierra Madre Range/Medicine Bow NF-
Upper North Platte River Basin-Snowy Range/Medicine Bow NF-
Laramie Valley/Shirley Basin-
217 AM MDT Mon Aug 10 2020

...RED FLAG WARNING REMAINS IN EFFECT FROM 9 AM THIS MORNING TO
8 PM MDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE 
WEATHER ZONES 303, 304, 305, 306, 307, AND 308...

...FIRE WEATHER WATCH IN EFFECT FROM TUESDAY MORNING THROUGH
TUESDAY EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER
ZONES 303, 304, 305, 306, 307, AND 308...

The National Weather Service in Cheyenne has issued a Fire
Weather Watch, which is in effect from Tuesday morning through
Tuesday evening. 

* AFFECTED AREA...Fire weather zones 303 through 308.

* WIND...West to southwest 15 to 20 mph sustained with gusts to 35
  mph today. Similar winds are expected Tuesday.

* HUMIDITY...8 to 12 percent this afternoon. Similar humidity
  expected Tuesday.

* HAINES...6.

* IMPACTS...Any fires that develop will likely spread rapidly. 
  Outdoor burning is not recommended.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Red Flag Warning means that critical fire weather conditions
are either occurring now...or will shortly. A combination of
gusty winds...low relative humidity...and warm temperatures can
contribute to extreme fire behavior.

A Fire Weather Watch means that critical fire weather conditions
may develop. Listen for later forecasts and possible Red Flag
Warnings.

&&

$$

WYZ301-302-110000-
/O.NEW.KCYS.FW.A.0017.200811T1700Z-200812T0200Z/
Niobrara/Lower Elevations of Converse/Thunder Basin National
Grassland-North Laramie Range/Medicine Bow NF-
217 AM MDT Mon Aug 10 2020

...FIRE WEATHER WATCH IN EFFECT FROM TUESDAY MORNING THROUGH
TUESDAY EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR WESTERN
PORTIONS OF FIRE WEATHER ZONES 301 AND 302...

The National Weather Service in Cheyenne has issued a Fire
Weather Watch, which is in effect from Tuesday morning through
Tuesday evening. 

* AFFECTED AREA...Western portions of Fire weather zone 301.
  Western portions of Fire weather zone 302.

* WIND...West to southwest winds 15 to 20 mph with gusts of 30 to
  35 mph expected.

* HUMIDITY...8 to 12 percent during the afternoon.

* HAINES...6

* IMPACTS...any fires that develop will likely spread rapidly. 
  Outdoor burning is not recommended.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Fire Weather Watch means that critical fire weather conditions
may develop. Listen for later forecasts and possible Red Flag
Warnings.

&&

$$
279 
WWUS85 KCYS 102014
RFWCYS

URGENT - FIRE WEATHER MESSAGE
National Weather Service Cheyenne WY
214 PM MDT Mon Aug 10 2020

...CRITICAL FIRE WEATHER CONDITIONS CONTINUE TODAY AND AGAIN  
TUESDAY MAINLY OVER AND WEST OF THE LARAMIE RANGE...

WYZ303>308-111000-
/O.UPG.KCYS.FW.A.0017.200811T1700Z-200812T0200Z/
/O.NEW.KCYS.FW.W.0022.200811T1700Z-200812T0200Z/
/O.CON.KCYS.FW.W.0021.000000T0000Z-200811T0200Z/
Central and Northern Carbon/Ferris-Seminoe-Shirley Mountains-
Southwest Carbon County-Sierra Madre Range/Medicine Bow NF-
Upper North Platte River Basin-Snowy Range/Medicine Bow NF-
Laramie Valley/Shirley Basin-
214 PM MDT Mon Aug 10 2020

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING
FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 303, 304,
305, 306, 307, AND 308...
...RED FLAG WARNING IN EFFECT FROM 11 AM TO 8 PM MDT TUESDAY FOR
GUSTY WINDS AND LOW HUMIDITY...

The National Weather Service in Cheyenne has issued a Red Flag
Warning, which is in effect from 11 AM to 8 PM MDT Tuesday. The
Fire Weather Watch is no longer in effect. 

* AFFECTED AREA...Fire weather zones 303 through 308.

* WIND...West to southwest 15 to 20 mph sustained with gusts to 30 
  mph today. Similar winds are expected Tuesday. 

* HUMIDITY...8 to 12 percent this afternoon. Similar humidity 
  expected Tuesday.

* HAINES...6.

* IMPACTS...Any fires that develop will likely spread rapidly. 
  Outdoor burning is not recommended.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Red Flag Warning means that critical fire weather conditions
are either occurring now...or will shortly. A combination of
gusty winds...low relative humidity...and warm temperatures can
contribute to extreme fire behavior.

&&

$$

WYZ302-111000-
/O.UPG.KCYS.FW.A.0017.200811T1700Z-200812T0200Z/
/O.NEW.KCYS.FW.W.0022.200811T1700Z-200812T0200Z/
North Laramie Range/Medicine Bow NF-
214 PM MDT Mon Aug 10 2020

...RED FLAG WARNING IN EFFECT FROM 11 AM TO 8 PM MDT TUESDAY FOR
GUSTY WINDS AND LOW HUMIDITY...

The National Weather Service in Cheyenne has issued a Red Flag
Warning, which is in effect from 11 AM to 8 PM MDT Tuesday. The
Fire Weather Watch is no longer in effect. 

* AFFECTED AREA...Western portions of Fire weather zone 302.
 
* WIND...West to southwest winds 15 to 20 mph with gusts of 30 
  to 35 mph expected. 

* HUMIDITY...8 to 12 percent during the afternoon.

* HAINES...6

* IMPACTS...any fires that develop will likely spread rapidly.
  Outdoor burning is not recommended.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Red Flag Warning means that critical fire weather conditions
are either occurring now....or will shortly. A combination of
strong winds...low relative humidity...and warm temperatures can
contribute to extreme fire behavior.

&&

$$

WYZ301-111000-
/O.CON.KCYS.FW.A.0017.200811T1700Z-200812T0200Z/
Niobrara/Lower Elevations of Converse/Thunder Basin National
Grassland-
214 PM MDT Mon Aug 10 2020

...FIRE WEATHER WATCH REMAINS IN EFFECT FROM TUESDAY MORNING
THROUGH TUESDAY EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR
WESTERN PORTIONS OF FIRE WEATHER ZONES 301...

* AFFECTED AREA...Western portions of Fire weather zone 301. 

* WIND...West to southwest winds 15 to 20 mph with gusts to 30 
  mph possible. 

* HUMIDITY...8 to 12 percent during the afternoon.

* HAINES...6

* IMPACTS...any fires that develop will likely spread rapidly. 
  Outdoor burning is not recommended.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Fire Weather Watch means that critical fire weather conditions
may develop. Listen for later forecasts and possible Red Flag
Warnings.

&&

$$
527 
WWUS85 KCYS 110202
RFWCYS

URGENT - FIRE WEATHER MESSAGE
National Weather Service Cheyenne WY
802 PM MDT Mon Aug 10 2020

...CRITICAL FIRE WEATHER CONDITIONS TUESDAY ALONG AND WEST 
OF THE LARAMIE RANGE...

WYZ303>308-111700-
/O.EXP.KCYS.FW.W.0021.000000T0000Z-200811T0200Z/
/O.CON.KCYS.FW.W.0022.200811T1700Z-200812T0200Z/
Central and Northern Carbon/Ferris-Seminoe-Shirley Mountains-
Southwest Carbon County-Sierra Madre Range/Medicine Bow NF-
Upper North Platte River Basin-Snowy Range/Medicine Bow NF-
Laramie Valley/Shirley Basin-
802 PM MDT Mon Aug 10 2020

...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM TO 8 PM MDT
TUESDAY FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 
303, 304, 305, 306, 307, AND 308... 
...RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING FOR GUSTY
WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 303, 304, 305, 306,
307, AND 308...

* AFFECTED AREA...Fire weather zones 303 through 308.

* WIND...West to southwest 15 to 25 mph sustained with gusts to 35
  mph Tuesday. 

* HUMIDITY...8 to 11 percent.

* HAINES...6.

* IMPACTS...Any fires that develop will likely spread rapidly. 
  Outdoor burning is not recommended.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Red Flag Warning means that critical fire weather conditions
are either occurring now...or will shortly. A combination of
gusty winds...low relative humidity...and warm temperatures can
contribute to extreme fire behavior.

&&

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Red Flag Warning means that critical fire weather conditions
are either occurring now....or will shortly. A combination of
strong winds...low relative humidity...and warm temperatures can
contribute to extreme fire behavior.

&&

$$

WYZ301-111700-
/O.UPG.KCYS.FW.A.0017.200811T1700Z-200812T0200Z/
/O.EXA.KCYS.FW.W.0022.200811T1700Z-200812T0200Z/
Niobrara/Lower Elevations of Converse/Thunder Basin National
Grassland-
802 PM MDT Mon Aug 10 2020

...RED FLAG WARNING IN EFFECT FROM 11 AM TO 8 PM MDT TUESDAY FOR
GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 301...

The National Weather Service in Cheyenne has issued a Red Flag
Warning, which is in effect from 11 AM to 8 PM MDT Tuesday. The
Fire Weather Watch is no longer in effect. 

* AFFECTED AREA...Northern and western portions of fire weather 
  zone 301.

* WIND...West to southwest winds 15 to 20 mph with gusts to 30
  mph.

* HUMIDITY...8 to 12 percent.

* HAINES...5 to 6

* IMPACTS...any fires that develop will likely spread rapidly.
  Outdoor burning is not recommended.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Red Flag Warning means that critical fire weather conditions
are either occurring now....or will shortly. A combination of
strong winds...low relative humidity...and warm temperatures can
contribute to extreme fire behavior.

&&

$$

WYZ302-111700-
/O.CON.KCYS.FW.W.0022.200811T1700Z-200812T0200Z/
North Laramie Range/Medicine Bow NF-
802 PM MDT Mon Aug 10 2020

...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM TO 8 PM MDT
TUESDAY FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 
302...

* AFFECTED AREA...Central and western portions of fire weather 
  zone 302.

* WIND...West to southwest winds 15 to 20 mph with gusts of 30 to
  35 mph.

* HUMIDITY...8 to 12 percent.

* HAINES...6

* IMPACTS...any fires that develop will likely spread rapidly. 
  Outdoor burning is not recommended.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Red Flag Warning means that critical fire weather conditions
are either occurring now....or will shortly. A combination of
strong winds...low relative humidity...and warm temperatures can
contribute to extreme fire behavior.

&&

$$

The office that day

Everything else NWS Cheyenne, WY issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 9, 1:33 AM MDTFire Weather WatchCYS13 hr

Nearby

Red Flag Warnings in Wyoming, 2020Every red flag warning in 2020

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.